{"cve":"CVE-2021-43171","nvd":{"published":"2023-08-22T19:16:21.760","modified":"2026-06-17T04:10:34.780","status":"Modified","description":"Improper verification of applications' cryptographic signatures in the /e/OS app store client App Lounge before 0.19q allows attackers in control of the application server to install malicious applications on user's systems by altering the server's API response.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","score":6.5},"cwes":["CWE-347"],"references":["https://gitlab.e.foundation/e/os/releases/-/releases/v0.19-q#sparkles-we-embedded-other-improvements","https://nervuri.net/e/apps","https://gitlab.e.foundation/e/os/releases/-/releases/v0.19-q#sparkles-we-embedded-other-improvements","https://nervuri.net/e/apps"],"products":["e.foundation:app_lounge"],"source":"nvd","synced_at":"2026-10-19T21:39:14.809778102+00:00"},"epss":{"cve":"CVE-2021-43171","score":0.00408,"percentile":0.35057,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}